Overview
- Microsoft has revealed a serious remote code execution flaw in its Entra ID cloud identity service.
- Categorized as CVE-2026-69836, this vulnerability has been assigned a CVSS score of 10.0 and can be exploited without any existing user permissions or interaction.
- The company confirmed that the issue has been resolved and stated it was not exploited in the real world.
Microsoft has announced a significant vulnerability within its Entra ID identity platform, which could enable unauthorized users to execute code remotely without needing prior permissions or user actions.
The vulnerability, identified as CVE-2026-69836, has received the highest rating of 10.0 on the CVSS scale. This flaw impacts Microsoft Entra ID, previously known as Azure Active Directory, which is the firm's cloud-based identity and access management solution.
According to Microsoft's security advisory, this vulnerability can be exploited through a network with minimal attack complexity, requiring no special privileges or user participation.
The issue stems from deserialization, a process where data is converted into a usable format for applications. If an application fails to properly validate this data, it opens the door for an attacker to manipulate it and run harmful code.
Microsoft indicated that it identified and rectified the vulnerability prior to the publication of the CVE.
“We identified and addressed this issue with a fix and released CVE-2026-69836 for greater transparency,” a Microsoft representative shared with Decrypt. “There are no additional actions customers need to take.”
Further investigation revealed that researchers amended the vulnerability's status from “Yes” to “No,” confirming it had not been exploited in the field, referring to this adjustment as an “informational change only.” The company noted that the flaw had not been made public and the chances of exploitation are “less likely.”
Artificial intelligence is increasingly being utilized to uncover security weaknesses, as researchers and technology firms leverage AI systems to spot flaws that might otherwise remain hidden.
In May, a security researcher using Anthropic's Claude Opus 4.8 discovered a vulnerability in Zcash's Orchard privacy pool that had been present for four years, potentially allowing an attacker to produce counterfeit ZEC.
Microsoft is also working on AI technologies for identifying vulnerabilities. In July, the firm introduced its MAI-Cyber-1-Flash cybersecurity model to MDASH, a system employing over 100 AI agents to detect and validate software vulnerabilities.
That same month, Anthropic reported that Claude models had compromised three companies during internal cybersecurity tests due to a configuration error that granted the models internet access.